package com.example.seckill.controller;

import com.example.seckill.pojo.User;
import com.example.seckill.service.IGoodsService;
import com.example.seckill.service.IUserService;
import com.example.seckill.vo.DetailVo;
import com.example.seckill.vo.GoodsVo;
import com.example.seckill.vo.RespBean;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.CookieValue;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.thymeleaf.Thymeleaf;
import org.thymeleaf.context.WebContext;
import org.thymeleaf.spring5.view.ThymeleafViewResolver;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.time.Year;
import java.util.Date;
import java.util.concurrent.TimeUnit;

/**
 * @Author: Jason
 * @ClassName: GoodsController
 * @Description: 商品
 * @Package：com.example.seckill.controller
 * @Project：seckill
 * @name：GoodsController
 * @Filename：GoodsController
 **/

@Controller
@RequestMapping("/goods")
public class GoodsController {

    @Autowired
    private IUserService userService;
    @Autowired
    private IGoodsService goodsService;
    @Autowired
    private RedisTemplate redisTemplate;
    @Autowired
    private ThymeleafViewResolver thymeleafViewResolver;

    /**
     * 跳转到商品列表页
     * @Param response
     * @param model
     * @return
     */
    @RequestMapping(value = "/toList",produces = "text/html;charset=utf-8")
    @ResponseBody
    public String toList(Model model,User user,HttpServletRequest request,HttpServletResponse response){
//        System.out.println("ticket:"+ticket);
//        System.out.println(StringUtils.isEmpty(ticket));
//        if (StringUtils.isEmpty(ticket)){
//            return "login";
//        }
////        User user = (User) session.getAttribute(ticket);
//        User user = userService.getUserByCookie(ticket, request, response);
//        System.out.println("user"+user);
//        System.out.println(user);
        if (null==user){
            return "login";
        }
//        redis中获取页面，如果不为空，直接返回页面
        ValueOperations valueOperations = redisTemplate.opsForValue();
        String html = (String) valueOperations.get("goodsList");
        if (!StringUtils.isEmpty(html)){
            return html;
        }
        model.addAttribute("user",user);
        model.addAttribute("goodsList",goodsService.findGoodsVo());
//        return "goodsList";
//        如果为空，手动渲染，存入Redis并返回
        WebContext webContext = new WebContext(request,response,request.getServletContext(),request.getLocale(),model.asMap());
        html = thymeleafViewResolver.getTemplateEngine().process("goodsList", webContext);
        if (!StringUtils.isEmpty(html)){
            valueOperations.set("goodsList",html,60, TimeUnit.MINUTES);
        }
        return html;
    }
//    @RequestMapping("/toList")
//    public String toList(HttpServletRequest request, HttpServletResponse response, Model model, @CookieValue("userTicket") String ticket){
//        System.out.println("ticket:"+ticket);
//        System.out.println(StringUtils.isEmpty(ticket));
//        if (StringUtils.isEmpty(ticket)){
//            return "login";
//        }
////        User user = (User) session.getAttribute(ticket);
//        User user = userService.getUserByCookie(ticket, request, response);
//        System.out.println("user"+user);
//        if (null==user){
//            return "login";
//        }
//        model.addAttribute("user",user);
//        return "goodsList";
//    }


    //页面静态化---redis缓存
//    /**
//     * 跳转商品详情页
//     * @param model
//     * @Param user
//     * @Param goodsId
//     * @return
//     */
//    @RequestMapping(value = "/toDetail/{goodsId}",produces = "text/html;charset=utf-8")
//    @ResponseBody
//    public String toDetail(Model model,User user,@PathVariable Long goodsId,HttpServletRequest request,HttpServletResponse response){
////        System.out.println("ticket:"+ticket);
////        System.out.println(StringUtils.isEmpty(ticket));
////        if (StringUtils.isEmpty(ticket)){
////            return "login";
////        }
//////        User user = (User) session.getAttribute(ticket);
////        User user = userService.getUserByCookie(ticket, request, response);
////        System.out.println("user"+user);
////        if (null==user){
////            return "login";
////        }
//        ValueOperations valueOperations = redisTemplate.opsForValue();
//        //redis中获取页面，如果不为空，直接返回页面
//        String html = (String) valueOperations.get("goodsDetail:" + goodsId);
//        if (!StringUtils.isEmpty(html)){
//            return html;
//        }
//
//        model.addAttribute("user",user);
//        System.out.println("开始查询商品详情");
//        System.out.println(goodsId);
//        System.out.println(goodsService.findGoodsVoByGoodsId(goodsId));
//        GoodsVo goodsVo = goodsService.findGoodsVoByGoodsId(goodsId);
//        Date startDate = goodsVo.getStartDate();
//        Date endDate = goodsVo.getEndDate();
//        Date nowDate = new Date();
////        秒杀状态
//        int secKillStatus = 0;
////        秒杀倒计时
//        int remainSeconds=0;
////        秒杀还没开始
//        if (nowDate.before(startDate)){
//            remainSeconds= (int) ((startDate.getTime()-nowDate.getTime())/1000);
//        }else if (nowDate.after(endDate)){
//            //秒杀已结束
//            secKillStatus=2;
//            remainSeconds=-1;
//        }else {
//            //秒杀中
//            secKillStatus=1;
//            remainSeconds=0;
//        }
//        model.addAttribute("remainSeconds",remainSeconds);
//        model.addAttribute("secKillStatus",secKillStatus);
//        model.addAttribute("goods",goodsVo);
//        WebContext webContext = new WebContext(request,response,request.getServletContext(),request.getLocale(),model.asMap());
//        html = thymeleafViewResolver.getTemplateEngine().process("goodsDetail",webContext);
////        return "goodsDetail";
//        if (!StringUtils.isEmpty(html)){
//            valueOperations.set("goodsDetail",html,60, TimeUnit.MINUTES);
//        }
//        return html;
//    }



    //页面缓存，ajax实现页面分离，redis缓存
    /**
     * 跳转商品详情页
     * @param model
     * @Param user
     * @Param goodsId
     * @return
     */
    @RequestMapping(value = "/detail/{goodsId}")
    @ResponseBody
    public RespBean toDetail(Model model, User user, @PathVariable Long goodsId){
        GoodsVo goodsVo = goodsService.findGoodsVoByGoodsId(goodsId);
        Date startDate = goodsVo.getStartDate();
        Date endDate = goodsVo.getEndDate();
        Date nowDate = new Date();
//        秒杀状态
        int secKillStatus = 0;
//        秒杀倒计时
        int remainSeconds=0;
//        秒杀还没开始
        if (nowDate.before(startDate)){
            remainSeconds= (int) ((startDate.getTime()-nowDate.getTime())/1000);
        }else if (nowDate.after(endDate)){
            //秒杀已结束
            secKillStatus=2;
            remainSeconds=-1;
        }else {
            //秒杀中
            secKillStatus=1;
            remainSeconds=0;
        }
        DetailVo detailVo = new DetailVo();
        detailVo.setUser(user);
        detailVo.setGoodsVo(goodsVo);
        detailVo.setSecKillStatus(secKillStatus);
        detailVo.setRemainSeconds(remainSeconds);
        return RespBean.success(detailVo);
    }


}
